![](/images/new-backgrounds/1205046/205046113x1.webp)
ATA COMMAND BLOCK AND SET DESCRIPTION |
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Set Features — EFh
The Set Features command allows the host to configure the feature set of the device according to the attributes listed in Table 48.
Table 47: Set Features — EFh
Register | D7 | D6 | D5 | D4 |
| D3 | D2 |
| D1 | D0 |
Feature |
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| Feature |
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| ||
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Sector Count |
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| X |
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| |
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Sector Number |
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| X |
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| |
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| |
Cylinder Low |
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| X |
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| |
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| |
Cylinder High |
|
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| X |
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| |
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| |
Drive Head | X | X | X | Drive |
|
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| X |
| |
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Command |
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| EFh |
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| |
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| Table 48: Set Features’ Attributes |
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Feature | Operation |
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01h | Enable |
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66h | Disable reverting to power on defaults |
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81h | Disable |
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BBh | 4 bytes of data apply on Read/Write Long commands |
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CCh | Enable revert to power on defaults |
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|
On
SILICONSYSTEMS PROPRIETARY
This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.
All unauthorized use and/or reproduction is prohibited.
PAGE 48 | FEBRUARY 2, 2009 |